November 8, 2011 — The first and last astronauts to fly on the space shuttle met Nov. 2 in Houston, Texas to pose for a series of historic photographs.

John Young and Robert Crippen, who in April 1981 flew on board shuttle Columbia on mission STS-1, joined the STS-135 crew Chris Ferguson, Doug Hurley, Sandra Magnus and Rex Walheim at NASA's Johnson Space Center. The six former and current astronauts united at the Space Vehicle Mockup Facility, where both crews had trained prior to their missions in full-scale shuttle mockups.

For the "final four" who landed shuttle Atlantis for a final time in July, the photo op also marked an end to their time together as a crew since being assigned to train together in September 2010.

"We're done," Ferguson told the Chronicle. "Everyone goes their separate ways right now. From the crew office standpoint, the shuttle program is over."

NASA formally declared its 30-year space shuttle program completed on Aug. 31, more than a month after the STS-135 crew returned to Earth. Since then, the four have gone through post-flight briefings and toured around the nation to talk about their mission.

The four astronauts also left both theirs and Young's and Crippen's patches on the International Space Station together with a U.S. flag that flew first on STS-1.

Credit: NASA / Houston Chronicle, Smiley N. Pool

Above: The current and former astronauts who formed the crews of STS-1, the first space shuttle mission, and STS-135, the final shuttle mission, pose for a group photo at the Johnson Space Center in Houston on Nov. 2, 2011. They are, from left, STS-1 commander John Young and pilot Robert Crippen with STS-135 commander Chris Ferguson, pilot Doug Hurley, and mission specialists Sandy Magnus and Rex Walheim.